daverio



4 Sheets-$hest 1- G DAVERIO Crushing Rolls. No. 200,263.

Patented Feb. 12,1878

1 Invenitr; V

fzaverio, @(m y e drawings, m) 1 bring vertical crass-sec- 11m z'lig; f? a, samimmlgtmmd ia-n Fig. 3, an end, elev'm m, and 4; 5% Side elevatiqm, partly in @EQUOEL The Figs. 5 and Sshow the T0 (m 4115mm it amm: Ba; fiXA- Wv'll that if Ubemb ass, mm: H ventedl'mpmvemer Enliers tb'r'fi $110M airman mam and in grmmd plan A. M a imppia" with the twu feedmoli ma B and C wfmmmi. (Riven hy Hm woi'ims Z) and. wheem a, film 31mm; of the farmer receiving mu 30m, 1 smmiimr wm'm-wheel gearing 130.11; the mm. @fdm 1301191. D, E anri F Mei-he the lawn one sf which rnals in mmmwn fixed hi: "-hij: shaft? Qfthg: 1211mm?- D and iE'vtflB t2; that I Na flue (50m! gmmd. "m Wars;- 1 r inthe im--- reduce pl 02 Q jmm a'iai'zierc mic'fi, 1L mewmfi {DQ311363 far we sca -an, rm apamte griuding hrm .1 an bmwean time rnfiexsaq rape puiieye am keyed Q: shaft-s of the upper and. tbu pulleys have mm P 'iPhQ'LiQs M ieysiadu ex} a ling; a pivot which in fine-a wpon bya/ weighted Emma mxmnd each 01 thefirgt-demr M lays in as many @0515 as Y gmo' 107mm, and is; finally ed 0W 1e expandin lay a fterthee-mi f fihesama L mean @111 Em-Wing; .L

together. The w se being h maggi waver; be varied. according to desire. nation of the-Weighted ievem, 43m 11 The J -M 1051? mm Qua-pivot fixed to a slidingtlm reflerrghafta arefnmi W flm'wu tmvarsi black, which marks on ag'uifiB-bar, a. fig each other in a simrl1&r 21x2: ner- "pair of a Wren pag aim thmugh 5*; Mg 011 the 10104311 x,

7 whisk are frsfi m uscii 33f a cenmmn (MW 5 H we the rope ya! 3 k miezrs E} smd W Mm" 313 ing, the lower pulleys 1' 2 upper ones, 55', five, m mils ofmpe amund eaeh pair M3 sixth. mi! 1311 an in g fmm the low .1 gammy u da s exp-cmding-pulleyvhwhicI1 must be. m; an angle, as shown by the can: @201. groovesinthepuileys taekie blmks, wherebyfillm pressure {if the :11s.u whim may be: tamed by the wheel is, $6

' as 1: {-uiljllfi''.

journals is almost en til-91y taken 0% i1 bearings, the straw. sf the mp0, lww'e'v ing the necessary amaum m? pressure mum the pulley J with raga "d m the dr-ivingimpe. a; is alever, film maul nt' whieh acts on a waiver the mllers. 1 7 '1 35 whila its long (and carrias i As tofiheseu'mdpa-rfi 0f Hm imm detemninea the tension re pg-rain is conducted. 151mm i {IL L in the rape. Between the heal-lugs at" the mil so we; to

gas-wires 1. p are. placcd sr the pnrpqse of cmnimting oil from mu: bearing to the mixer, also for shifting-the lollers apart, if this For the 1mmur1mse tha takers "have 2011211 021 which the levers k I: aet vhich may hanmvefa by Hm ezmms '3 amltbe hamlli? er 1. Tfiis rrangement is made use 01" wimn the mac 9 to be stogjgbezh as thereby mymzcunmlatwn grain before'ahe milers whi s nay muse dLficui$37 in ramming than: again,1s prevented Suppagiug the weight- 011 each lever g to he phannal befiweeu 1142. um wiLar, a-m'i by amfaher my v: ibhe fewer reflex; 1161 and themir'idle reflex a, w m. an jglmced, Whidimmeyrs the Jam '05: flapper pair of mailers Eatemfl am a izlh mixgzd with. the grain pr; Beeemd channel. Instwad.

a nmnb-sr of sum fun 01-s in; ads to 'trwne; mew by which tbs .5011? in mat 13 A mill arranged 210001 615115; f0 i'IflflE'GTG FL i8"v'1-2l11 1 tr; 10; the :atmin. on; each 9111 system 1s mpmsented on the annamal shmat mi lay J will be two hundred pmmdis. The tenin processes may be carriedi 1 nel lgfiand is crushed between through V a' -slit into the tube;

sion in each part of the driving-rope is therefore" one hundred pounds, and consequently the roller D is pressed at each end with a force ofone thousand pounds, the roller F with a force of twelve hundred pounds against the roller E., The hearings of the rcllers D E, however, are not subject to any pressure, and only serve as guides for the roller-shafts. The upward pull of the two rope parts lead.-

' ing to the pulley J, which'wouldcause a pressure on the bearing of the roller F, is nearly counterbalanced by the weighgof'the. three,

rollers, which, in a mill carried out on theiil'e scribed plan, amounted to three hundred and forty pounds. The bearings of the roller F are therefore in this case exposed to a very sl ght pressure only, which would become zero if the strain caused by the levers g were madeequaltothe weight of the three rollers. The described arrangement of driving-gears also be applied in case of two rollers, and for other purposes than the grinding of corn.

The driving-ropes must be made of the best hemp, and before using them they have, to be well s retched hyaweight equal toabout four times their, working strain. It is even pref: erableto expand the rope by letting it run vfor some time on a special machine, in which pulleys are arranged in the same style, as described, for the mill v For the better preservation of the rope it is adyantageous toimpr egnate it with a composition consisting of fish-toil, a solution of, india-rubbpr, and Is small quantity of. resin, and then to let it dry in the open air.

Ii it is desired to impart difi'erent speeds to the rollers, so as not only to crush the grains, but to reduce them by a grinding action, this may be attained by'niaking the lower rope pulleys larger in diameter than the upperones. If corn is to be .gIound coarsely by fluted rollers this arrangement is even necessary;

but it may also be used with rollers of pornoworm, G, rotated'by the wheel& 01 conveys it toward an opening, r, whence it is led back to thelower part of the mill, to be finally conducted to the dressing-machine. The corn passing over the feed-roller G into the chairnel 0 0 for the purpose of being crushed berin which a.

produced'between the rollers E and F, after being scraped oil by the scrapers a a, is directly conveyed into the dressing-machine.

'lhe modified a rangeme t for keeping the meal produced. .l'iyitlie "upper rollers separate from the corn passing through the channel 0 is vstrewn,lnn he Fig p nd 6. A number of funnel-she passages, d'd,iin this case, traverse the said channel, and allow th meal tofall directly into the same conduit ward the dressing-machine as the mealpoming from the rollers E F. The upper and the lower parts of the channel 0 a communicate with each other between the funnels a a; by the spaces 2 z, which may also be made funnelshapedat the top.

The advantages attained by the described improvements are the following: First, the speed of thencrushingsrollers may be increased without danger of causing the hearings to heat, which otherwise very easily occurs in these mills second, in'consequence of the arrangement by which two separate grinding processes can he carried on by three rollers, the performance of the improved mill is equal to that of a mill with fourrollerspf the common sys, tem third, on oif thegreat reduction of frictionin the andithe increase of performancewith to t e number of rollers, the .quantity of meal; as, produced is N considerably augmented in proportion ,to the powerexpende I claim as my invcntiom-Q 1. Ina mill haying twofi combination of the rope p eys H H, having a number of grhovcs, with an expanding puly, d a orre p n i g .lli fi wre and for the purpose specified; 2. The combination of the three rollers D, E, and F, the two feed-channels N and oo,and the worm or creeper G, as and for the purpose described.

3. The combination of the as) independent,

feed-channels N and o 0" with the three rollers D E 1?, whereby thegrindingpperatio'n may be carried on independently between the rollare D a E -F, subs an i y as d s r d, E -.In testimony wh cctl, ha igned my e ms pecifi i n in th p s nted twosulimribing udtnessest" H. Srnmemn, J. ,H- AMMOND,

'threia'rollerathe V 

